Metal Gear Solid 4: Guns Of The Patriots Ep. 6 Chapter 1E - Liquid Sun Part 4

Character: "Solid Snake" / "Old Snake" / David
Chapter 1: Liquid Sun Part 4

Reunion with Meryl, so therefore we can conclude that Meryl managed to survive MGS1 as the canon story.

Playlist: https://www.dailymotion.com/playlist/x73vz3